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← GeographyWhich outcome concerning mineral concentration occurs due to hyporheic exchange in stream beds?
A)Nutrient aggregation within anoxic microzones✓
B)Increased thermal stratification downstream
C)Diminished biodiversity amidst increased flow
D)Reduced pollutant infiltration into aquifers
💡 Explanation
Nutrient aggregation in the hyporheic zone (anoxic microzones) occurs due to the stream's hyporheic exchange, promoting anaerobic respiration. Mineral deposition happens because redox reactions form insoluble precipitates rather than allowing for the water’s homogeneity; therefore, aggregates form.
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